JPH0221443B2 - - Google Patents
Info
- Publication number
- JPH0221443B2 JPH0221443B2 JP56174706A JP17470681A JPH0221443B2 JP H0221443 B2 JPH0221443 B2 JP H0221443B2 JP 56174706 A JP56174706 A JP 56174706A JP 17470681 A JP17470681 A JP 17470681A JP H0221443 B2 JPH0221443 B2 JP H0221443B2
- Authority
- JP
- Japan
- Prior art keywords
- washer
- fastener
- load distribution
- protrusion
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 description 10
- 239000012528 membrane Substances 0.000 description 8
- 239000010426 asphalt Substances 0.000 description 7
- 239000010410 layer Substances 0.000 description 7
- 239000012774 insulation material Substances 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 241000587161 Gomphocarpus Species 0.000 description 1
- 240000007643 Phytolacca americana Species 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
- F16B43/02—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts with special provisions for engaging surfaces which are not perpendicular to a bolt axis or do not surround the bolt
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/36—Connecting; Fastening
- E04D3/3601—Connecting; Fastening of roof covering supported by the roof structure with interposition of a insulating layer
- E04D3/3603—Connecting; Fastening of roof covering supported by the roof structure with interposition of a insulating layer the fastening means being screws or nails
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
- Connection Of Plates (AREA)
- Insertion Pins And Rivets (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Description
【発明の詳細な説明】
この発明は可圧縮材料を基材へ取付けるための
荷重分配ワツシヤ、例えば一例を挙げると屋根の
床板上に可圧縮性の断熱材を取付けるのに適した
ワツシヤに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a load distribution washer for attaching compressible material to a substrate, such as a washer suitable for attaching compressible insulation on roof decking, to give just one example.
片面に紙その他の被覆層を有する可圧縮性の断
熱材を金属製、木製、コンクリート製などの屋根
の床板上に固着するには大きなワツシヤ付きの釘
などのフアスナを用いて断熱材を床板に固着し、
次いでアスフアルトと紙や布の膜を用いて水密シ
ールを形成する。 To secure compressible insulation with a paper or other covering layer on one side to the roof deck of a metal, wood, or concrete roof, use fasteners, such as large nails, to attach the insulation to the deck. fixed,
A watertight seal is then formed using asphalt and a membrane of paper or cloth.
屋根上で材料を移動させるために、作業員がワ
ツシヤの上やワツシヤの近くを歩いたり、一輪
車、その他の装置をワツシヤ上や、その近くを通
らせることがある。このように局部的に力を加え
ると、フアスナの頭は上部の膜や、ワツシヤを突
き抜けて被覆層に突きささることがある。こうし
て膜とか、被覆層が破られると断熱材中にアスフ
アルトや湿気が入ることがある。そうなると断熱
効果は減少し、又、雨漏り屋根となる。 To move material on the roof, workers may walk on or near the washers, and wheelbarrows or other equipment may be passed over or near the washers. When such localized force is applied, the head of the fastener may penetrate the upper membrane or washer and become stuck in the coating layer. If the membrane or covering layer is broken in this way, asphalt or moisture may enter the insulation material. If this happens, the insulation effect will decrease and the roof will leak.
この問題を解消するために、断熱材と屋根床板
にユニツトとして若干の動けるワツシヤ付きフア
スナが使用されている。しかし、床板に対してフ
アスナが動くと、フアスナは床板の孔を拡げ、そ
の結果フアスナは破損する。更に、この方式はフ
アスナが釘に限定され、耐引抜き特性が優れたね
じを採用することができない。 To overcome this problem, some movable washered fasteners are used as a unit in the insulation and roof decking. However, as the fastener moves relative to the floorboard, the fastener enlarges the hole in the floorboard, resulting in damage to the fastener. Furthermore, in this method, the fasteners are limited to nails, and screws with excellent pull-out resistance cannot be used.
この発明はワツシヤの荷重分配フランジか、或
いはフランジの近辺に加えられた力に応じフアス
ナに対して浮動できるワツシヤに関する。本発明
のワツシヤの軸方向の突起部はフアスナの頭の径
より大なる内径と、頭の厚さの数倍の長さとを有
している。そして、フアスナは屋根の床板にしつ
かりと不動状に固定されているが、この発明のワ
ツシヤは断熱材に圧縮力を加えているとき、加え
た圧縮力を釈放したときそれぞれ断熱材が圧縮、
膨張するのに応じて自由に下つたり上つたりす
る。このワツシヤは釘とでも、ねじとでも、機械
的フアスナであれば一緒に用いることができる。 This invention relates to a washer that is capable of floating relative to a fastener in response to a force applied at or near the washer's load distribution flange. The axial protrusion of the washer of the invention has an inner diameter larger than the diameter of the head of the fastener and a length several times the thickness of the head. Fuasuna is firmly and immovably fixed to the floorboard of the roof, but the washer of this invention compresses the insulation material when compressive force is applied to the insulation material, and when the applied compressive force is released.
It moves freely down and up as it expands. This washer can be used with nails, screws, or any other mechanical fastener.
用途によつては、このワツシヤは弾性プラスチ
ツクで作るのがよい。それはプラスチツクワツシ
ヤは局部的な力が加わると撓み、縁を被覆層の中
へ突込まないからである。 Depending on the application, this washer may be made of elastic plastic. This is because the plastic swath flexes when localized forces are applied and does not push the edges into the coating layer.
ワツシヤには貫通孔の内部に可撓の突出部を備
えさせるのがよい。貫通孔にフアスナをさし込む
と、この可撓突出部が撓んでフアスナの頭を通過
させ、ワツシヤとフアスナはぱちつとはまり合
う。これによつて、フアスナとワツシヤ間で可能
な上下運動の上限が規制される。突起部の軸方向
長さは、通常の荷重状態では断熱材が圧縮されて
もフアスナの頭は可撓突出部と接触しない様に定
めてある。しかし、より大きな荷重でワツシヤが
最大に撓むと可撓突出部は内径を小さくしてフア
スナの頭が被覆用の層や膜をパンクさせるのを防
止する。尚、この可撓突出部は、フアスナの頭の
上方の孔のサイズを減小させ、接着剤やアスフア
ルトが貫通孔を塞がないようにすると共に、ワツ
シヤをなるべく浮動しないようにする。 The washer is preferably provided with a flexible protrusion inside the through hole. When the fastener is inserted into the through hole, the flexible protrusion bends to allow the head of the fastener to pass through, and the fastener and fastener snap into place. This limits the upper limit of the vertical movement possible between the fastener and the washer. The axial length of the projection is determined so that under normal loading conditions, even when the insulation is compressed, the head of the fastener does not come into contact with the flexible projection. However, when the washer is fully deflected under a larger load, the flexible projection reduces its inner diameter to prevent the head of the fastener from puncturing the covering layer or membrane. Note that this flexible protrusion reduces the size of the hole above the head of the fastener, prevents adhesive or asphalt from blocking the through hole, and prevents the washer from floating as much as possible.
以下、添付図面を参照して説明する。 The following description will be made with reference to the accompanying drawings.
この発明の荷重分配ワツシヤの一実施例が、第
１図に全体的に10で示してある。その軸方向の突
起部１２の上端の回りからは、横方向に外側へフ
ランジ１４が張出している。この突起部の下端部
は、好ましくは、テーパ面１６になつており、テ
ーパ面上には、等間隔に四つの鋭利なリブ１８が
設けてあり、被覆層２２を通して可圧縮材料２０
（第３Ａ図）中に突起部が突込み易くなつている。 One embodiment of the load distribution washer of the present invention is shown generally at 10 in FIG. A flange 14 projects laterally outward from around the upper end of the axial protrusion 12 . The lower end of this protrusion is preferably a tapered surface 16 on which four equally spaced sharp ribs 18 are provided to allow the compressible material 22 to pass through the covering layer 22.
(Fig. 3A) The protrusion can be easily pushed into the inside.
ワツシヤの材質は任意であるが。図示の様にプ
ラスチツクが好ましい。それはプラスチツクは可
撓性があり、ワツシヤが縁で被覆層２２や被覆膜
２４を破損させる虞が少いからである。フランジ
１４の下面には突起部１２から放射状に外に向か
つて次第に低くなる補強リブ２６を備えさせても
よい。このリブ２６を設けるとフランジ１４の厚
さを薄くし、プラスチツクで成形する場合に材料
の使用料を減らせる。 The material of the washer is optional. Plastic is preferred as shown. This is because plastic is flexible and there is less risk of the washer damaging the coating 22 or coating 24 at the edges. The lower surface of the flange 14 may be provided with reinforcing ribs 26 that gradually become lower as they radiate outward from the protrusion 12. The ribs 26 reduce the thickness of the flange 14 and reduce the amount of material used when molded from plastic.
第３Ａ図と第３Ｂ図で判る様にワツシヤ１０に
はフアスナ３０が通る貫通孔２８がある。貫通孔
２８にはフアスナの頭３４の直径より少し太く、
深さは頭３４の厚さの少くとも数倍ある拡大部３
２がある。拡大部３２の下は径の小径部３６にな
つていて両部３２と３６との間には段状の支持面
３８が形成されている。拡大部３２の上には内周
に張出した可撓突出部４０がありワツシヤにフア
スナをスナツプ式にはめるようになつている。上
面には貫通孔２８と同心に凹所４２が形成してあ
る。この凹所４２の形と大きさは例えば米国特許
出願第59867号（対応日本特許公開昭56−21784
号）に示されている様な駆動工具（図示なし）の
先端部を受入れる様になつている。 As seen in FIGS. 3A and 3B, washer 10 has a through hole 28 through which fastener 30 passes. The through hole 28 has a diameter slightly larger than the diameter of the head 34 of the fasuna.
The depth of the enlarged part 3 is at least several times the thickness of the head 34
There are 2. Below the enlarged portion 32 is a small diameter portion 36, and a stepped support surface 38 is formed between both portions 32 and 36. Above the enlarged portion 32 is a flexible protrusion 40 projecting to the inner periphery for allowing a fastener to be snapped onto the washer. A recess 42 is formed in the upper surface concentrically with the through hole 28. The shape and size of this recess 42 can be determined, for example, in US Patent Application No. 59867 (corresponding Japanese Patent Publication No. 56-21784).
It is designed to accept the tip of a drive tool (not shown) as shown in No.
第２図は釘３０′と、平らな金属ワツシヤ１
０′を用い、可圧縮性の断熱材２０′を金属の屋根
床板２５′に取付けた従来の取付状態を示す。取
付け後、断熱材上にアスフアルトと紙膜２４′を
かぶせる。屋根上で作業を行う際にワツシヤ１
０′や、その近辺に圧縮力を加えると図示のよう
に釘の頭が上に突き出し膜２４′を破ることがあ
る。又、ワツシヤの縁は被覆層２２′に突きささ
り、断熱材中へアスフアルトや湿気を入らせるこ
とがある。断熱材のすき間を異物がふさぐと断熱
効率が悪くなる。更に、上部にそのように穴があ
くと雨漏り屋根となる。 Figure 2 shows a nail 30' and a flat metal washer 1.
0' is used to show a conventional installation state in which a compressible heat insulating material 20' is attached to a metal roof plate 25'. After installation, asphalt and paper membrane 24' are placed over the heat insulating material. Washer 1 when working on the roof
If a compressive force is applied at or near 0', the nail head may protrude upward and break the membrane 24' as shown in the figure. Additionally, the edges of the washer may poke through the cover layer 22', allowing asphalt and moisture to enter the insulation. If foreign matter blocks the gaps in the insulation material, the insulation efficiency will deteriorate. Furthermore, if there is a hole in the top like that, the roof will leak.
この問題を解決するために釘に刻みをつけて保
持部３１′とし、この保持部を床板２５′の下に係
合させることが行われていた。それは保持部３
１′が通過すると床板の孔が僅かに閉まることを
期待してのことである。そうするとワツシヤ１
０′とフアスナ３０′は圧縮力に応じて一緒に動
く。しかし、ワツシヤの外縁部に加えられた力に
応じて釘が確実に動くにはワツシヤは釘のシヤン
クに対し非常にぴつたりとはまつていることが必
要で、はめ合い許容差がこのように厳密になる
と、フアスナに対しワツシヤは傾くことができな
くなる。更に重要なことは、床板に対する釘の移
動で釘は第２図の様に引き出され、おそらく床板
から抜ける程度に床板の穴は拡げられる虞があ
る。そうすると被覆膜が損傷するばかりか、釘は
断熱材を床板に固定しなくなる。 In order to solve this problem, the nail has been knurled to form a retaining portion 31', and this retaining portion is engaged under the floorboard 25'. That is holding part 3
This was done in the hope that the hole in the floorboard would close slightly when 1' passed through. Then Watsusha 1
0' and fastener 30' move together in response to compressive force. However, in order for the nail to move reliably in response to a force applied to the outer edge of the washer, the washer must fit very tightly against the nail shank, and fit tolerances such as these When it becomes strict, it is no longer possible to incline vatsya to huasuna. More importantly, the movement of the nail relative to the floorboard may cause the nail to be pulled out as shown in Figure 2, possibly enlarging the hole in the floorboard to the extent that the nail can be pulled out of the floorboard. Not only will this damage the sheathing, but the nails will no longer secure the insulation to the floorboards.
これに対し本発明のワツシヤは第３Ｂ図の様に
貫通孔に拡大部３２があるのでフアスナに対し浮
動できると同時に、傾くこともできる。その上、
プラスチツク製の場合はフランジの縁が可撓性な
ので膜２４や被覆層２２をパンクさせる虞はな
い。荷重が大きい場合は可撓突出部４０はワツシ
ヤがそれ以上の下動するのを阻止する抵抗を増大
するのでフアスナの頭が膜２４を突抜ける虞がな
い。又、可撓突出部４０は拡大部３２上で内周か
ら張出しているので拡大部の開口面積を小さくす
るのに役立ち、アスフアルトや水などを流入の虞
をなくする。このワツシヤは釘とでも、ねじとで
も使うことができる。しかしねじは釘よりも２〜
５倍の引抜抵抗を有するのでねじと使用するのが
最も好ましい。 In contrast, the washer of the present invention has an enlarged portion 32 in the through hole as shown in FIG. 3B, so that it can float relative to the fastener and at the same time can tilt. On top of that,
In the case of plastic, the edges of the flange are flexible, so there is no risk of puncturing the membrane 24 or coating layer 22. If the load is large, the flexible protrusion 40 provides increased resistance to prevent further downward movement of the washer so that there is no risk of the head of the fastener breaking through the membrane 24. Further, since the flexible protrusion 40 protrudes from the inner periphery on the enlarged part 32, it helps to reduce the opening area of the enlarged part, thereby eliminating the possibility of asphalt, water, etc. flowing in. This washer can be used with either nails or screws. However, screws are more expensive than nails.
Most preferred for use with screws as they have five times the pullout resistance.
第４，５図は本発明のワツシヤの第２実施例
で、フランジ１４には二つの突起部１１，１２が
設けてある。両突起部の間にはフランジ１４に沿
つて１対の補強リブ２６が設けてある。この実施
例は可圧縮材料の継目を跨いで使用するのに適す
る。 4 and 5 show a second embodiment of the washer of the present invention, in which a flange 14 is provided with two protrusions 11 and 12. A pair of reinforcing ribs 26 are provided along the flange 14 between both protrusions. This embodiment is suitable for use across seams of compressible materials.
第６図は本発明の他の一つの実施例を示す。屋
根の床板が振動を受ける様な場合は抜け出るねじ
もある。この傾向には貫通孔の拡大部３２の内部
に一方向のフインガ４４を形成し、且つフアスナ
の頭３４には突起４６を設けることで対抗でき
る。フインガ４４を撓ませてフアスナをねじ込む
ことはできるが、しかし逆回転は突起４６がフイ
ンガに引懸つて阻止される。フアスナを抜き出す
ための抜去力はフアスナ３０のねじ山と床板２５
の間のねじ係合ばかりでなく、ワツシヤ１０の下
面と被覆層２２の間の摩擦抵抗、突起部１２と可
圧縮断熱材２０の間の摩擦抵抗をも克服しなけれ
ばならない。補強リブ２６はまた被覆層の中へく
い込んで回転に対する抵抗を更に増大するのに役
立つ。 FIG. 6 shows another embodiment of the invention. There are also screws that can be pulled out if the roof floorboards are subject to vibrations. This tendency can be counteracted by forming a unidirectional finger 44 inside the enlarged portion 32 of the through hole and providing a protrusion 46 on the head 34 of the fastener. The fastener can be screwed in by deflecting the finger 44, but reverse rotation is prevented by the protrusion 46 catching on the finger. The removal force for pulling out the fastener is due to the screw thread of the fastener 30 and the floor plate 25.
Frictional resistance between the underside of the washer 10 and the covering layer 22 and between the protrusion 12 and the compressible insulation 20 must be overcome as well as the threaded engagement between the two. The reinforcing ribs 26 also dig into the covering layer and serve to further increase resistance to rotation.
以上、本発明を図示の実施例によつて説明した
が、本発明は図示の実施例に限定されるものでは
ない。例えば、ワツシヤの形状は図示した方形、
円形、楕円形以外の他の形状であつてもよい。更
に、可撓突出部は環状である必要はなく、部分的
に突出していてもよく、この方が可撓性が大にな
る。又、大きな可撓性を望まない場合は可撓突出
部で形成される内径を小さくしてもよい。更に、
接着剤やアスフアルトが寸法が小さいにもかかわ
らず拡大部３２を塞いでしまう場合は、凹所４２
はカバー円板をスナツプばめで取付けることがで
きるような形状にする。 Although the present invention has been described above with reference to the illustrated embodiments, the present invention is not limited to the illustrated embodiments. For example, the shape of the washsha is the square shown in the diagram,
The shape may be other than circular or oval. Furthermore, the flexible protrusion does not have to be annular, but may be partially protruding, which provides greater flexibility. Furthermore, if great flexibility is not desired, the inner diameter formed by the flexible protrusion may be made smaller. Furthermore,
If the adhesive or asphalt blocks the enlarged portion 32 despite its small dimensions, the recess 42
Shape the cover disc so that it can be attached with a snap fit.
第１図は本発明のワツシヤの一実施例を裏から
見た斜視図、第２図は従来の取付状態を示す説明
図、第３Ａ図は第１図のワツシヤの取付状態の断
面図、第３Ｂ図は同上の上から荷重を加えた状態
の断面図、第４図はこの発明のワツシヤの第２実
施例の平面図、第５図は同上の側面図、第６図は
この発明のワツシヤの他の一実施例の平面図で、
図中、１２は突起部、１４は荷重分配フランジ、
２０は可圧縮材料、２８は貫通孔、３０はフアス
ナ、３２は貫通孔の拡大部、３４はフアスナの
頭、３６は貫通孔の小径部分、３８は支持面を示
す。
Fig. 1 is a perspective view of an embodiment of the washer of the present invention seen from the back, Fig. 2 is an explanatory diagram showing the conventional mounting state, Fig. 3A is a sectional view of the washer shown in Fig. 1 in the mounted state; Figure 3B is a sectional view of the same as above with a load applied from above, Figure 4 is a plan view of the second embodiment of the washer of the present invention, Figure 5 is a side view of the same as the above, and Figure 6 is the washer of the present invention. A plan view of another embodiment of
In the figure, 12 is a protrusion, 14 is a load distribution flange,
20 is a compressible material, 28 is a through hole, 30 is a fastener, 32 is an enlarged portion of the through hole, 34 is a head of the fastener, 36 is a small diameter portion of the through hole, and 38 is a support surface.
Claims (1)
アスナと併用する弾性の荷重分配ワツシヤにおい
て、 固着すべき可圧縮材料の厚さより短かく、該可
圧縮材料中に突入する軸方向の突起部と、突起部
の一端から外方に張出した荷重分配フランジと、
前記突起部中を貫通した貫通孔を有し、 上記貫通孔はフアスナの頭よりも大きな径、及
び頭の厚さに少なくとも等しい長さを有する拡大
部と、この拡大部の下端に連通して設けられたこ
れよりも小径な小径部とを有し、前記貫通孔の拡
大部の上には一体の可撓突出部があり、この可撓
突出部の内径はフアスナの頭よりも小さいがフア
スナの頭を通過させる弾性を有する一方、ワツシ
ヤとフアスナの間の相対的軸方向の動きを限定す
ることを特徴とする荷重分配ワツシヤ。 ２ 貫通孔の拡大部は内部にフアスナの頭と協力
してワツシヤとフアスナの間の相対的回転を阻止
する手段を有する特許請求の範囲第１項に記載の
荷重分配ワツシヤ。 ３ 突起部は横に離れて複数個設けられている特
許請求の範囲第１項に記載の荷重分配ワツシヤ。 ４ 可撓突出部は貫通孔を実質的に閉鎖する様に
内向に延びた複数のセグメントからなる特許請求
の範囲第１項に記載の荷重分配ワツシヤ。 ５ 突起部の他端は可圧縮材料中に挿入し易いテ
ーパ部になつている特許請求の範囲第１項に記載
の荷重分配ワツシヤ。 ６ 前記テーパ部には複数の鋭利なリブが設けら
れている特許請求の範囲第５項に記載の荷重分配
ワツシヤ。 ７ 荷重分配フランジは上面に貫通孔と同心で、
駆動工具の先端部を受容し、且つこの先端部と整
合する凹所を有する特許請求の範囲第１項に記載
の荷重分配ワツシヤ。[Scope of Claims] 1. An elastic load-distributing washer used in conjunction with a headed fastener to secure a compressible material to a substrate, wherein the washer protrudes into the compressible material at a length shorter than the thickness of the compressible material to be secured. an axial protrusion that extends outwardly from one end of the protrusion;
a through hole passing through the protrusion, the through hole communicating with an enlarged portion having a diameter larger than the head of the fastener and a length at least equal to the thickness of the head, and a lower end of the enlarged portion; a smaller diameter portion provided thereon, and above the enlarged portion of the through hole is an integral flexible protrusion, the inner diameter of the flexible protrusion being smaller than the head of the fastener; A load distribution washer characterized in that it has elasticity to allow passage of the head of the washer while limiting relative axial movement between the washer and the fastener. 2. A load distribution washer according to claim 1, wherein the enlarged portion of the through hole has means therein for cooperating with the head of the fastener to prevent relative rotation between the washer and the fastener. 3. The load distribution washer according to claim 1, wherein a plurality of protrusions are provided laterally apart. 4. A load distribution washer as claimed in claim 1, wherein the flexible projection comprises a plurality of inwardly extending segments so as to substantially close the throughbore. 5. The load distribution washer according to claim 1, wherein the other end of the protrusion is a tapered portion that can be easily inserted into a compressible material. 6. The load distribution washer according to claim 5, wherein the tapered portion is provided with a plurality of sharp ribs. 7 The load distribution flange is concentric with the through hole on the top surface,
2. A load distribution washer as claimed in claim 1 having a recess for receiving and aligning with a tip of a drive tool.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/202,960 US4380413A (en) | 1980-11-03 | 1980-11-03 | Load-distributive washer for use with compressible material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57107417A JPS57107417A (en) | 1982-07-03 |
| JPH0221443B2 true JPH0221443B2 (en) | 1990-05-15 |
Family
ID=22751914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56174706A Granted JPS57107417A (en) | 1980-11-03 | 1981-11-02 | Load distribution washer using for compressable material |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4380413A (en) |
| JP (1) | JPS57107417A (en) |
| CA (1) | CA1156071A (en) |
| DE (1) | DE3137836A1 (en) |
| FR (1) | FR2493380A1 (en) |
| GB (1) | GB2086517B (en) |
| IE (1) | IE52030B1 (en) |
| MX (1) | MX152802A (en) |
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| US4074501A (en) * | 1975-04-24 | 1978-02-21 | Sune Allan Sandqvist | Method of securing a sealing layer to a support |
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-
1980
- 1980-11-03 US US06/202,960 patent/US4380413A/en not_active Expired - Lifetime
-
1981
- 1981-09-04 CA CA000385282A patent/CA1156071A/en not_active Expired
- 1981-09-21 MX MX189240A patent/MX152802A/en unknown
- 1981-09-23 DE DE19813137836 patent/DE3137836A1/en not_active Withdrawn
- 1981-10-21 FR FR8119756A patent/FR2493380A1/en active Granted
- 1981-11-02 GB GB8132935A patent/GB2086517B/en not_active Expired
- 1981-11-02 IE IE2555/81A patent/IE52030B1/en not_active IP Right Cessation
- 1981-11-02 JP JP56174706A patent/JPS57107417A/en active Granted
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|---|---|---|---|---|
| US4074501A (en) * | 1975-04-24 | 1978-02-21 | Sune Allan Sandqvist | Method of securing a sealing layer to a support |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2086517B (en) | 1984-08-08 |
| FR2493380A1 (en) | 1982-05-07 |
| IE52030B1 (en) | 1987-05-27 |
| IE812555L (en) | 1982-05-03 |
| JPS57107417A (en) | 1982-07-03 |
| FR2493380B1 (en) | 1985-04-05 |
| US4380413A (en) | 1983-04-19 |
| DE3137836A1 (en) | 1982-06-16 |
| CA1156071A (en) | 1983-11-01 |
| GB2086517A (en) | 1982-05-12 |
| MX152802A (en) | 1986-06-09 |
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